Jebelean, PetruPrecup, RaduRodríguez López, Jorge2024-03-112024-03-112024Nonlinear Analysis Volume 240, March 2024, 1134700362-546Xhttp://hdl.handle.net/10347/33098We are concerned with existence, localization and multiplicity of positive radial solutions to Dirichlet problems with Ø-Laplacians in a ball, in both scalar and system cases. Our approach essentially relies on fixed point index computations and a main feature is that it avoids any Harnack type inequality. Applications to some problems involving operators with Uhlenbeck structure are discussed.eng© 2023 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND licenseAttribution-NonCommercial-NoDerivatives 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/Dirichlet problemOperator with Uhlenbeck structurePositive radial solutionFixed point indexMean curvature operatorp-Laplacianjournal article10.1016/j.na.2023.113470open access